[Influence of calcium and magnesium ions on myocardial surface and intracellular electrogram and contractile force of a dog].
D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D004285:Dogs; D004562:Electrocardiography; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D008274:Magnesium / Q000494:pharmacology*; D008564:Membrane Potentials; D009119:Muscle Contraction / Q000187:drug effects*; D010477:Perfusion
D008274:Magnesium; D002118:Calcium